scsi_sa.c revision 71082
1/* 2 * $FreeBSD: head/sys/cam/scsi/scsi_sa.c 71082 2001-01-15 22:28:11Z mjacob $ 3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32#include <sys/param.h> 33#include <sys/queue.h> 34#ifdef _KERNEL 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#endif 38#include <sys/types.h> 39#include <sys/bio.h> 40#include <sys/malloc.h> 41#include <sys/mtio.h> 42#ifdef _KERNEL 43#include <sys/conf.h> 44#endif 45#include <sys/devicestat.h> 46#include <machine/limits.h> 47 48#ifndef _KERNEL 49#include <stdio.h> 50#include <string.h> 51#endif 52 53#include <cam/cam.h> 54#include <cam/cam_ccb.h> 55#include <cam/cam_extend.h> 56#include <cam/cam_periph.h> 57#include <cam/cam_xpt_periph.h> 58#include <cam/cam_debug.h> 59 60#include <cam/scsi/scsi_all.h> 61#include <cam/scsi/scsi_message.h> 62#include <cam/scsi/scsi_sa.h> 63 64#ifdef _KERNEL 65 66#include <opt_sa.h> 67 68#ifndef SA_SPACE_TIMEOUT 69#define SA_SPACE_TIMEOUT 1 * 60 70#endif 71#ifndef SA_REWIND_TIMEOUT 72#define SA_REWIND_TIMEOUT 2 * 60 73#endif 74#ifndef SA_ERASE_TIMEOUT 75#define SA_ERASE_TIMEOUT 4 * 60 76#endif 77 78#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 79#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 80#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 81 82/* 83 * Additional options that can be set for config: SA_1FM_AT_EOT 84 */ 85 86#ifndef UNUSED_PARAMETER 87#define UNUSED_PARAMETER(x) x = x 88#endif 89 90#define QFRLS(ccb) \ 91 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 92 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 93 94/* 95 * Driver states 96 */ 97 98 99typedef enum { 100 SA_STATE_NORMAL, SA_STATE_ABNORMAL 101} sa_state; 102 103#define ccb_pflags ppriv_field0 104#define ccb_bp ppriv_ptr1 105 106#define SA_CCB_BUFFER_IO 0x0 107#define SA_CCB_WAITING 0x1 108#define SA_CCB_TYPEMASK 0x1 109#define SA_POSITION_UPDATED 0x2 110 111#define Set_CCB_Type(x, type) \ 112 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 113 x->ccb_h.ccb_pflags |= type 114 115#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 116 117 118 119typedef enum { 120 SA_FLAG_OPEN = 0x0001, 121 SA_FLAG_FIXED = 0x0002, 122 SA_FLAG_TAPE_LOCKED = 0x0004, 123 SA_FLAG_TAPE_MOUNTED = 0x0008, 124 SA_FLAG_TAPE_WP = 0x0010, 125 SA_FLAG_TAPE_WRITTEN = 0x0020, 126 SA_FLAG_EOM_PENDING = 0x0040, 127 SA_FLAG_EIO_PENDING = 0x0080, 128 SA_FLAG_EOF_PENDING = 0x0100, 129 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 130 SA_FLAG_EOF_PENDING), 131 SA_FLAG_INVALID = 0x0200, 132 SA_FLAG_COMP_ENABLED = 0x0400, 133 SA_FLAG_COMP_SUPP = 0x0800, 134 SA_FLAG_COMP_UNSUPP = 0x1000, 135 SA_FLAG_TAPE_FROZEN = 0x2000 136} sa_flags; 137 138typedef enum { 139 SA_MODE_REWIND = 0x00, 140 SA_MODE_NOREWIND = 0x01, 141 SA_MODE_OFFLINE = 0x02 142} sa_mode; 143 144typedef enum { 145 SA_PARAM_NONE = 0x00, 146 SA_PARAM_BLOCKSIZE = 0x01, 147 SA_PARAM_DENSITY = 0x02, 148 SA_PARAM_COMPRESSION = 0x04, 149 SA_PARAM_BUFF_MODE = 0x08, 150 SA_PARAM_NUMBLOCKS = 0x10, 151 SA_PARAM_WP = 0x20, 152 SA_PARAM_SPEED = 0x40, 153 SA_PARAM_ALL = 0x7f 154} sa_params; 155 156typedef enum { 157 SA_QUIRK_NONE = 0x00, 158 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 159 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 160 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 161 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 162 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 163 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 164 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 165 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 166} sa_quirks; 167 168/* units are bits 4-7, 16-21 (1024 units) */ 169#define SAUNIT(DEV) \ 170 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 171 172#define SAMODE(z) ((minor(z) & 0x3)) 173#define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 174#define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 175 176#define SA_NOT_CTLDEV 0 177#define SA_CTLDEV 1 178 179#define SA_ATYPE_R 0 180#define SA_ATYPE_NR 1 181#define SA_ATYPE_ER 2 182 183#define SAMINOR(ctl, unit, mode, access) \ 184 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 185 (mode << 0x2) | (access & 0x3)) 186 187#define SA_NUM_MODES 4 188struct sa_devs { 189 dev_t ctl_dev; 190 struct sa_mode_devs { 191 dev_t r_dev; 192 dev_t nr_dev; 193 dev_t er_dev; 194 } mode_devs[SA_NUM_MODES]; 195}; 196 197struct sa_softc { 198 sa_state state; 199 sa_flags flags; 200 sa_quirks quirks; 201 struct bio_queue_head bio_queue; 202 int queue_count; 203 struct devstat device_stats; 204 struct sa_devs devs; 205 int blk_gran; 206 int blk_mask; 207 int blk_shift; 208 u_int32_t max_blk; 209 u_int32_t min_blk; 210 u_int32_t comp_algorithm; 211 u_int32_t saved_comp_algorithm; 212 u_int32_t media_blksize; 213 u_int32_t last_media_blksize; 214 u_int32_t media_numblks; 215 u_int8_t media_density; 216 u_int8_t speed; 217 u_int8_t scsi_rev; 218 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 219 int buffer_mode; 220 int filemarks; 221 union ccb saved_ccb; 222 223 /* 224 * Relative to BOT Location. 225 */ 226 daddr_t fileno; 227 daddr_t blkno; 228 229 /* 230 * Latched Error Info 231 */ 232 struct { 233 struct scsi_sense_data _last_io_sense; 234 u_int32_t _last_io_resid; 235 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 236 struct scsi_sense_data _last_ctl_sense; 237 u_int32_t _last_ctl_resid; 238 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 239#define last_io_sense errinfo._last_io_sense 240#define last_io_resid errinfo._last_io_resid 241#define last_io_cdb errinfo._last_io_cdb 242#define last_ctl_sense errinfo._last_ctl_sense 243#define last_ctl_resid errinfo._last_ctl_resid 244#define last_ctl_cdb errinfo._last_ctl_cdb 245 } errinfo; 246 /* 247 * Misc other flags/state 248 */ 249 u_int32_t 250 : 31, 251 ctrl_mode : 1; /* control device open */ 252}; 253 254struct sa_quirk_entry { 255 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 256 sa_quirks quirks; /* specific quirk type */ 257 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 258}; 259 260static struct sa_quirk_entry sa_quirk_table[] = 261{ 262 { 263 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 264 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 265 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 266 }, 267 { 268 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 269 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 270 }, 271 { 272 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 273 "Python*", "*"}, SA_QUIRK_NODREAD, 0 274 }, 275 { 276 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 277 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 278 }, 279 { 280 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 281 "VIPER 2525 25462", "-011"}, 282 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 283 }, 284 { 285 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 286 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 287 }, 288#if 0 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 291 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 292 }, 293#endif 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 296 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 300 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 301 }, 302 { 303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 304 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 305 }, 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 308 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 309 }, 310 { 311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 312 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 313 }, 314 { /* jreynold@primenet.com */ 315 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 316 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 317 }, 318 { /* mike@sentex.net */ 319 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 320 "STT20000*", "*"}, SA_QUIRK_1FM, 0 321 }, 322 { 323 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 324 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 325 }, 326 { 327 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 328 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 329 }, 330 { 331 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 332 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 333 }, 334 { 335 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 336 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 337 }, 338 { 339 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 340 " SLR*", "*"}, SA_QUIRK_1FM, 0 341 }, 342 { 343 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 344 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 345 }, 346 { 347 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 348 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 349 } 350}; 351 352static d_open_t saopen; 353static d_close_t saclose; 354static d_strategy_t sastrategy; 355static d_ioctl_t saioctl; 356static periph_init_t sainit; 357static periph_ctor_t saregister; 358static periph_oninv_t saoninvalidate; 359static periph_dtor_t sacleanup; 360static periph_start_t sastart; 361static void saasync(void *callback_arg, u_int32_t code, 362 struct cam_path *path, void *arg); 363static void sadone(struct cam_periph *periph, 364 union ccb *start_ccb); 365static int saerror(union ccb *ccb, u_int32_t cam_flags, 366 u_int32_t sense_flags); 367static int samarkswanted(struct cam_periph *); 368static int sacheckeod(struct cam_periph *periph); 369static int sagetparams(struct cam_periph *periph, 370 sa_params params_to_get, 371 u_int32_t *blocksize, u_int8_t *density, 372 u_int32_t *numblocks, int *buff_mode, 373 u_int8_t *write_protect, u_int8_t *speed, 374 int *comp_supported, int *comp_enabled, 375 u_int32_t *comp_algorithm, 376 sa_comp_t *comp_page); 377static int sasetparams(struct cam_periph *periph, 378 sa_params params_to_set, 379 u_int32_t blocksize, u_int8_t density, 380 u_int32_t comp_algorithm, 381 u_int32_t sense_flags); 382static void saprevent(struct cam_periph *periph, int action); 383static int sarewind(struct cam_periph *periph); 384static int saspace(struct cam_periph *periph, int count, 385 scsi_space_code code); 386static int samount(struct cam_periph *, int, dev_t); 387static int saretension(struct cam_periph *periph); 388static int sareservereleaseunit(struct cam_periph *periph, 389 int reserve); 390static int saloadunload(struct cam_periph *periph, int load); 391static int saerase(struct cam_periph *periph, int longerase); 392static int sawritefilemarks(struct cam_periph *periph, 393 int nmarks, int setmarks); 394static int sardpos(struct cam_periph *periph, int, u_int32_t *); 395static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 396 397 398static struct periph_driver sadriver = 399{ 400 sainit, "sa", 401 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 402}; 403 404DATA_SET(periphdriver_set, sadriver); 405 406/* For 2.2-stable support */ 407#ifndef D_TAPE 408#define D_TAPE 0 409#endif 410 411#define SA_CDEV_MAJOR 14 412 413static struct cdevsw sa_cdevsw = { 414 /* open */ saopen, 415 /* close */ saclose, 416 /* read */ physread, 417 /* write */ physwrite, 418 /* ioctl */ saioctl, 419 /* poll */ nopoll, 420 /* mmap */ nommap, 421 /* strategy */ sastrategy, 422 /* name */ "sa", 423 /* maj */ SA_CDEV_MAJOR, 424 /* dump */ nodump, 425 /* psize */ nopsize, 426 /* flags */ D_TAPE, 427 /* bmaj */ -1 428}; 429 430static struct extend_array *saperiphs; 431 432static int 433saopen(dev_t dev, int flags, int fmt, struct proc *p) 434{ 435 struct cam_periph *periph; 436 struct sa_softc *softc; 437 int unit; 438 int mode; 439 int density; 440 int error; 441 int s; 442 443 unit = SAUNIT(dev); 444 mode = SAMODE(dev); 445 density = SADENSITY(dev); 446 447 s = splsoftcam(); 448 periph = cam_extend_get(saperiphs, unit); 449 if (periph == NULL) { 450 (void) splx(s); 451 return (ENXIO); 452 } 453 softc = (struct sa_softc *)periph->softc; 454 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 455 splx(s); 456 return (error); 457 } 458 splx(s); 459 460 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 461 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 462 463 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 464 cam_periph_unlock(periph); 465 return (ENXIO); 466 } 467 if (SA_IS_CTRL(dev)) { 468 softc->ctrl_mode = 1; 469 cam_periph_unlock(periph); 470 return (0); 471 } 472 473 474 if (softc->flags & SA_FLAG_OPEN) { 475 error = EBUSY; 476 } else if (softc->flags & SA_FLAG_INVALID) { 477 error = ENXIO; 478 } else { 479 /* 480 * The function samount ensures media is loaded and ready. 481 * It also does a device RESERVE if the tape isn't yet mounted. 482 */ 483 error = samount(periph, flags, dev); 484 } 485 486 if (error) { 487 cam_periph_release(periph); 488 } else { 489 saprevent(periph, PR_PREVENT); 490 softc->flags |= SA_FLAG_OPEN; 491 } 492 cam_periph_unlock(periph); 493 return (error); 494} 495 496static int 497saclose(dev_t dev, int flag, int fmt, struct proc *p) 498{ 499 struct cam_periph *periph; 500 struct sa_softc *softc; 501 int unit, mode, error, writing, tmp; 502 int closedbits = SA_FLAG_OPEN; 503 504 unit = SAUNIT(dev); 505 mode = SAMODE(dev); 506 periph = cam_extend_get(saperiphs, unit); 507 if (periph == NULL) 508 return (ENXIO); 509 510 softc = (struct sa_softc *)periph->softc; 511 512 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 513 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 514 515 516 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 517 return (error); 518 } 519 520 if (SA_IS_CTRL(dev)) { 521 softc->ctrl_mode = 0; 522 cam_periph_release(periph); 523 cam_periph_unlock(periph); 524 return (0); 525 } 526 527 /* 528 * Were we writing the tape? 529 */ 530 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 531 532 /* 533 * See whether or not we need to write filemarks. If this 534 * fails, we probably have to assume we've lost tape 535 * position. 536 */ 537 error = sacheckeod(periph); 538 if (error) { 539 xpt_print_path(periph->path); 540 printf("failed to write terminating filemark(s)\n"); 541 softc->flags |= SA_FLAG_TAPE_FROZEN; 542 } 543 544 /* 545 * Whatever we end up doing, allow users to eject tapes from here on. 546 */ 547 saprevent(periph, PR_ALLOW); 548 549 /* 550 * Decide how to end... 551 */ 552 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 553 closedbits |= SA_FLAG_TAPE_FROZEN; 554 } else switch (mode) { 555 case SA_MODE_OFFLINE: 556 /* 557 * An 'offline' close is an unconditional release of 558 * frozen && mount conditions, irrespective of whether 559 * these operations succeeded. The reason for this is 560 * to allow at least some kind of programmatic way 561 * around our state getting all fouled up. If somebody 562 * issues an 'offline' command, that will be allowed 563 * to clear state. 564 */ 565 (void) sarewind(periph); 566 (void) saloadunload(periph, FALSE); 567 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 568 break; 569 case SA_MODE_REWIND: 570 /* 571 * If the rewind fails, return an error- if anyone cares, 572 * but not overwriting any previous error. 573 * 574 * We don't clear the notion of mounted here, but we do 575 * clear the notion of frozen if we successfully rewound. 576 */ 577 tmp = sarewind(periph); 578 if (tmp) { 579 if (error != 0) 580 error = tmp; 581 } else { 582 closedbits |= SA_FLAG_TAPE_FROZEN; 583 } 584 break; 585 case SA_MODE_NOREWIND: 586 /* 587 * If we're not rewinding/unloading the tape, find out 588 * whether we need to back up over one of two filemarks 589 * we wrote (if we wrote two filemarks) so that appends 590 * from this point on will be sane. 591 */ 592 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 593 tmp = saspace(periph, -1, SS_FILEMARKS); 594 if (tmp) { 595 xpt_print_path(periph->path); 596 printf("unable to backspace over one of double" 597 " filemarks at end of tape\n"); 598 xpt_print_path(periph->path); 599 printf("it is possible that this device" 600 " needs a SA_QUIRK_1FM quirk set for it\n"); 601 softc->flags |= SA_FLAG_TAPE_FROZEN; 602 } 603 } 604 break; 605 default: 606 xpt_print_path(periph->path); 607 panic("unknown mode 0x%x in saclose\n", mode); 608 /* NOTREACHED */ 609 break; 610 } 611 612 /* 613 * We wish to note here that there are no more filemarks to be written. 614 */ 615 softc->filemarks = 0; 616 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 617 618 /* 619 * And we are no longer open for business. 620 */ 621 softc->flags &= ~closedbits; 622 623 /* 624 * Inform users if tape state if frozen.... 625 */ 626 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 627 xpt_print_path(periph->path); 628 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 629 "command to clear this state.\n"); 630 } 631 632 /* release the device if it is no longer mounted */ 633 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 634 sareservereleaseunit(periph, FALSE); 635 636 cam_periph_unlock(periph); 637 cam_periph_release(periph); 638 639 return (error); 640} 641 642/* 643 * Actually translate the requested transfer into one the physical driver 644 * can understand. The transfer is described by a buf and will include 645 * only one physical transfer. 646 */ 647static void 648sastrategy(struct bio *bp) 649{ 650 struct cam_periph *periph; 651 struct sa_softc *softc; 652 u_int unit; 653 int s; 654 655 if (SA_IS_CTRL(bp->bio_dev)) { 656 bp->bio_error = EINVAL; 657 goto bad; 658 } 659 unit = SAUNIT(bp->bio_dev); 660 periph = cam_extend_get(saperiphs, unit); 661 if (periph == NULL) { 662 bp->bio_error = ENXIO; 663 goto bad; 664 } 665 softc = (struct sa_softc *)periph->softc; 666 667 s = splsoftcam(); 668 669 if (softc->flags & SA_FLAG_INVALID) { 670 splx(s); 671 bp->bio_error = ENXIO; 672 goto bad; 673 } 674 675 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 676 splx(s); 677 bp->bio_error = EPERM; 678 goto bad; 679 } 680 681 splx(s); 682 683 /* 684 * If it's a null transfer, return immediatly 685 */ 686 if (bp->bio_bcount == 0) 687 goto done; 688 689 /* valid request? */ 690 if (softc->flags & SA_FLAG_FIXED) { 691 /* 692 * Fixed block device. The byte count must 693 * be a multiple of our block size. 694 */ 695 if (((softc->blk_mask != ~0) && 696 ((bp->bio_bcount & softc->blk_mask) != 0)) || 697 ((softc->blk_mask == ~0) && 698 ((bp->bio_bcount % softc->min_blk) != 0))) { 699 xpt_print_path(periph->path); 700 printf("Invalid request. Fixed block device " 701 "requests must be a multiple " 702 "of %d bytes\n", softc->min_blk); 703 bp->bio_error = EINVAL; 704 goto bad; 705 } 706 } else if ((bp->bio_bcount > softc->max_blk) || 707 (bp->bio_bcount < softc->min_blk) || 708 (bp->bio_bcount & softc->blk_mask) != 0) { 709 710 xpt_print_path(periph->path); 711 printf("Invalid request. Variable block device " 712 "requests must be "); 713 if (softc->blk_mask != 0) { 714 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 715 } 716 printf("between %d and %d bytes\n", softc->min_blk, 717 softc->max_blk); 718 bp->bio_error = EINVAL; 719 goto bad; 720 } 721 722 /* 723 * Mask interrupts so that the device cannot be invalidated until 724 * after we are in the queue. Otherwise, we might not properly 725 * clean up one of the buffers. 726 */ 727 s = splbio(); 728 729 /* 730 * Place it at the end of the queue. 731 */ 732 bioq_insert_tail(&softc->bio_queue, bp); 733 734 softc->queue_count++; 735 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 736 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, 737 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 738 (bp->bio_cmd == BIO_READ)? "read" : "write", softc->queue_count)); 739 740 splx(s); 741 742 /* 743 * Schedule ourselves for performing the work. 744 */ 745 xpt_schedule(periph, 1); 746 747 return; 748bad: 749 bp->bio_flags |= BIO_ERROR; 750done: 751 752 /* 753 * Correctly set the buf to indicate a completed xfer 754 */ 755 bp->bio_resid = bp->bio_bcount; 756 biodone(bp); 757} 758 759static int 760saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 761{ 762 struct cam_periph *periph; 763 struct sa_softc *softc; 764 scsi_space_code spaceop; 765 int didlockperiph = 0; 766 int s; 767 int unit; 768 int mode; 769 int density; 770 int error = 0; 771 772 unit = SAUNIT(dev); 773 mode = SAMODE(dev); 774 density = SADENSITY(dev); 775 error = 0; /* shut up gcc */ 776 spaceop = 0; /* shut up gcc */ 777 778 periph = cam_extend_get(saperiphs, unit); 779 if (periph == NULL) 780 return (ENXIO); 781 782 softc = (struct sa_softc *)periph->softc; 783 784 /* 785 * Check for control mode accesses. We allow MTIOCGET and 786 * MTIOCERRSTAT (but need to be the only one open in order 787 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 788 * and MTCOMP (but need to be the only one accessing this 789 * device to run those). 790 */ 791 792 if (SA_IS_CTRL(dev)) { 793 switch (cmd) { 794 case MTIOCGETEOTMODEL: 795 case MTIOCGET: 796 break; 797 case MTIOCERRSTAT: 798 /* 799 * If the periph isn't already locked, lock it 800 * so our MTIOCERRSTAT can reset latched error stats. 801 * 802 * If the periph is already locked, skip it because 803 * we're just getting status and it'll be up to the 804 * other thread that has this device open to do 805 * an MTIOCERRSTAT that would clear latched status. 806 */ 807 s = splsoftcam(); 808 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 809 error = cam_periph_lock(periph, PRIBIO|PCATCH); 810 if (error != 0) { 811 splx(s); 812 return (error); 813 } 814 didlockperiph = 1; 815 } 816 break; 817 818 case MTIOCSETEOTMODEL: 819 case MTSETBSIZ: 820 case MTSETDNSTY: 821 case MTCOMP: 822 /* 823 * We need to acquire the peripheral here rather 824 * than at open time because we are sharing writable 825 * access to data structures. 826 */ 827 s = splsoftcam(); 828 error = cam_periph_lock(periph, PRIBIO|PCATCH); 829 if (error != 0) { 830 splx(s); 831 return (error); 832 } 833 didlockperiph = 1; 834 break; 835 836 default: 837 return (EINVAL); 838 } 839 } 840 841 /* 842 * Find the device that the user is talking about 843 */ 844 switch (cmd) { 845 case MTIOCGET: 846 { 847 struct mtget *g = (struct mtget *)arg; 848 849 /* 850 * If this isn't the control mode device, actually go out 851 * and ask the drive again what it's set to. 852 */ 853 if (!SA_IS_CTRL(dev)) { 854 u_int8_t write_protect; 855 int comp_enabled, comp_supported; 856 error = sagetparams(periph, SA_PARAM_ALL, 857 &softc->media_blksize, &softc->media_density, 858 &softc->media_numblks, &softc->buffer_mode, 859 &write_protect, &softc->speed, &comp_supported, 860 &comp_enabled, &softc->comp_algorithm, NULL); 861 if (error) 862 break; 863 if (write_protect) 864 softc->flags |= SA_FLAG_TAPE_WP; 865 else 866 softc->flags &= ~SA_FLAG_TAPE_WP; 867 softc->flags &= ~(SA_FLAG_COMP_SUPP| 868 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 869 if (comp_supported) { 870 if (softc->saved_comp_algorithm == 0) 871 softc->saved_comp_algorithm = 872 softc->comp_algorithm; 873 softc->flags |= SA_FLAG_COMP_SUPP; 874 if (comp_enabled) 875 softc->flags |= SA_FLAG_COMP_ENABLED; 876 } else 877 softc->flags |= SA_FLAG_COMP_UNSUPP; 878 } 879 bzero(g, sizeof(struct mtget)); 880 g->mt_type = MT_ISAR; 881 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 882 g->mt_comp = MT_COMP_UNSUPP; 883 g->mt_comp0 = MT_COMP_UNSUPP; 884 g->mt_comp1 = MT_COMP_UNSUPP; 885 g->mt_comp2 = MT_COMP_UNSUPP; 886 g->mt_comp3 = MT_COMP_UNSUPP; 887 } else { 888 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 889 g->mt_comp = MT_COMP_DISABLED; 890 } else { 891 g->mt_comp = softc->comp_algorithm; 892 } 893 g->mt_comp0 = softc->comp_algorithm; 894 g->mt_comp1 = softc->comp_algorithm; 895 g->mt_comp2 = softc->comp_algorithm; 896 g->mt_comp3 = softc->comp_algorithm; 897 } 898 g->mt_density = softc->media_density; 899 g->mt_density0 = softc->media_density; 900 g->mt_density1 = softc->media_density; 901 g->mt_density2 = softc->media_density; 902 g->mt_density3 = softc->media_density; 903 g->mt_blksiz = softc->media_blksize; 904 g->mt_blksiz0 = softc->media_blksize; 905 g->mt_blksiz1 = softc->media_blksize; 906 g->mt_blksiz2 = softc->media_blksize; 907 g->mt_blksiz3 = softc->media_blksize; 908 g->mt_fileno = softc->fileno; 909 g->mt_blkno = softc->blkno; 910 g->mt_dsreg = (short) softc->dsreg; 911 error = 0; 912 break; 913 } 914 case MTIOCERRSTAT: 915 { 916 struct scsi_tape_errors *sep = 917 &((union mterrstat *)arg)->scsi_errstat; 918 919 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 920 ("saioctl: MTIOCERRSTAT\n")); 921 922 bzero(sep, sizeof(*sep)); 923 sep->io_resid = softc->last_io_resid; 924 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 925 sizeof (sep->io_sense)); 926 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 927 sizeof (sep->io_cdb)); 928 sep->ctl_resid = softc->last_ctl_resid; 929 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 930 sizeof (sep->ctl_sense)); 931 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 932 sizeof (sep->ctl_cdb)); 933 934 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 935 bzero((caddr_t) &softc->errinfo, 936 sizeof (softc->errinfo)); 937 error = 0; 938 break; 939 } 940 case MTIOCTOP: 941 { 942 struct mtop *mt; 943 int count; 944 945 mt = (struct mtop *)arg; 946 947 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 948 ("saioctl: op=0x%x count=0x%x\n", 949 mt->mt_op, mt->mt_count)); 950 951 count = mt->mt_count; 952 switch (mt->mt_op) { 953 case MTWEOF: /* write an end-of-file marker */ 954 /* 955 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 956 * flag because by keeping track of filemarks 957 * we have last written we know ehether or not 958 * we need to write more when we close the device. 959 */ 960 error = sawritefilemarks(periph, count, FALSE); 961 break; 962 case MTWSS: /* write a setmark */ 963 error = sawritefilemarks(periph, count, TRUE); 964 break; 965 case MTBSR: /* backward space record */ 966 case MTFSR: /* forward space record */ 967 case MTBSF: /* backward space file */ 968 case MTFSF: /* forward space file */ 969 case MTBSS: /* backward space setmark */ 970 case MTFSS: /* forward space setmark */ 971 case MTEOD: /* space to end of recorded medium */ 972 { 973 int nmarks; 974 975 spaceop = SS_FILEMARKS; 976 nmarks = softc->filemarks; 977 error = sacheckeod(periph); 978 if (error) { 979 xpt_print_path(periph->path); 980 printf("EOD check prior to spacing failed\n"); 981 softc->flags |= SA_FLAG_EIO_PENDING; 982 break; 983 } 984 nmarks -= softc->filemarks; 985 switch(mt->mt_op) { 986 case MTBSR: 987 count = -count; 988 /* FALLTHROUGH */ 989 case MTFSR: 990 spaceop = SS_BLOCKS; 991 break; 992 case MTBSF: 993 count = -count; 994 /* FALLTHROUGH */ 995 case MTFSF: 996 break; 997 case MTBSS: 998 count = -count; 999 /* FALLTHROUGH */ 1000 case MTFSS: 1001 spaceop = SS_SETMARKS; 1002 break; 1003 case MTEOD: 1004 spaceop = SS_EOD; 1005 count = 0; 1006 nmarks = 0; 1007 break; 1008 default: 1009 error = EINVAL; 1010 break; 1011 } 1012 if (error) 1013 break; 1014 1015 nmarks = softc->filemarks; 1016 /* 1017 * XXX: Why are we checking again? 1018 */ 1019 error = sacheckeod(periph); 1020 if (error) 1021 break; 1022 nmarks -= softc->filemarks; 1023 error = saspace(periph, count - nmarks, spaceop); 1024 /* 1025 * At this point, clear that we've written the tape 1026 * and that we've written any filemarks. We really 1027 * don't know what the applications wishes to do next- 1028 * the sacheckeod's will make sure we terminated the 1029 * tape correctly if we'd been writing, but the next 1030 * action the user application takes will set again 1031 * whether we need to write filemarks. 1032 */ 1033 softc->flags &= 1034 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1035 softc->filemarks = 0; 1036 break; 1037 } 1038 case MTREW: /* rewind */ 1039 (void) sacheckeod(periph); 1040 error = sarewind(periph); 1041 /* see above */ 1042 softc->flags &= 1043 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1044 softc->filemarks = 0; 1045 break; 1046 case MTERASE: /* erase */ 1047 error = saerase(periph, count); 1048 softc->flags &= 1049 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1050 break; 1051 case MTRETENS: /* re-tension tape */ 1052 error = saretension(periph); 1053 softc->flags &= 1054 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1055 break; 1056 case MTOFFL: /* rewind and put the drive offline */ 1057 1058 (void) sacheckeod(periph); 1059 /* see above */ 1060 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1061 softc->filemarks = 0; 1062 1063 error = sarewind(periph); 1064 /* clear the frozen flag anyway */ 1065 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1066 1067 /* 1068 * Be sure to allow media removal before ejecting. 1069 */ 1070 1071 saprevent(periph, PR_ALLOW); 1072 if (error == 0) { 1073 error = saloadunload(periph, FALSE); 1074 if (error == 0) { 1075 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1076 } 1077 } 1078 break; 1079 1080 case MTNOP: /* no operation, sets status only */ 1081 case MTCACHE: /* enable controller cache */ 1082 case MTNOCACHE: /* disable controller cache */ 1083 error = 0; 1084 break; 1085 1086 case MTSETBSIZ: /* Set block size for device */ 1087 1088 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1089 0, 0, 0); 1090 if (error == 0) { 1091 softc->last_media_blksize = 1092 softc->media_blksize; 1093 softc->media_blksize = count; 1094 if (count) { 1095 softc->flags |= SA_FLAG_FIXED; 1096 if (powerof2(count)) { 1097 softc->blk_shift = 1098 ffs(count) - 1; 1099 softc->blk_mask = count - 1; 1100 } else { 1101 softc->blk_mask = ~0; 1102 softc->blk_shift = 0; 1103 } 1104 /* 1105 * Make the user's desire 'persistent'. 1106 */ 1107 softc->quirks &= ~SA_QUIRK_VARIABLE; 1108 softc->quirks |= SA_QUIRK_FIXED; 1109 } else { 1110 softc->flags &= ~SA_FLAG_FIXED; 1111 if (softc->max_blk == 0) { 1112 softc->max_blk = ~0; 1113 } 1114 softc->blk_shift = 0; 1115 if (softc->blk_gran != 0) { 1116 softc->blk_mask = 1117 softc->blk_gran - 1; 1118 } else { 1119 softc->blk_mask = 0; 1120 } 1121 /* 1122 * Make the user's desire 'persistent'. 1123 */ 1124 softc->quirks |= SA_QUIRK_VARIABLE; 1125 softc->quirks &= ~SA_QUIRK_FIXED; 1126 } 1127 } 1128 break; 1129 case MTSETDNSTY: /* Set density for device and mode */ 1130 if (count > UCHAR_MAX) { 1131 error = EINVAL; 1132 break; 1133 } else { 1134 error = sasetparams(periph, SA_PARAM_DENSITY, 1135 0, count, 0, 0); 1136 } 1137 break; 1138 case MTCOMP: /* enable compression */ 1139 /* 1140 * Some devices don't support compression, and 1141 * don't like it if you ask them for the 1142 * compression page. 1143 */ 1144 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1145 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1146 error = ENODEV; 1147 break; 1148 } 1149 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1150 0, 0, count, SF_NO_PRINT); 1151 break; 1152 default: 1153 error = EINVAL; 1154 } 1155 break; 1156 } 1157 case MTIOCIEOT: 1158 case MTIOCEEOT: 1159 error = 0; 1160 break; 1161 case MTIOCRDSPOS: 1162 error = sardpos(periph, 0, (u_int32_t *) arg); 1163 break; 1164 case MTIOCRDHPOS: 1165 error = sardpos(periph, 1, (u_int32_t *) arg); 1166 break; 1167 case MTIOCSLOCATE: 1168 error = sasetpos(periph, 0, (u_int32_t *) arg); 1169 break; 1170 case MTIOCHLOCATE: 1171 error = sasetpos(periph, 1, (u_int32_t *) arg); 1172 break; 1173 case MTIOCGETEOTMODEL: 1174 error = 0; 1175 if (softc->quirks & SA_QUIRK_1FM) 1176 mode = 1; 1177 else 1178 mode = 2; 1179 *((u_int32_t *) arg) = mode; 1180 break; 1181 case MTIOCSETEOTMODEL: 1182 error = 0; 1183 switch (*((u_int32_t *) arg)) { 1184 case 1: 1185 softc->quirks &= ~SA_QUIRK_2FM; 1186 softc->quirks |= SA_QUIRK_1FM; 1187 break; 1188 case 2: 1189 softc->quirks &= ~SA_QUIRK_1FM; 1190 softc->quirks |= SA_QUIRK_2FM; 1191 break; 1192 default: 1193 error = EINVAL; 1194 break; 1195 } 1196 break; 1197 default: 1198 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1199 break; 1200 } 1201 if (didlockperiph) { 1202 cam_periph_unlock(periph); 1203 } 1204 return (error); 1205} 1206 1207static void 1208sainit(void) 1209{ 1210 cam_status status; 1211 struct cam_path *path; 1212 1213 /* 1214 * Create our extend array for storing the devices we attach to. 1215 */ 1216 saperiphs = cam_extend_new(); 1217 if (saperiphs == NULL) { 1218 printf("sa: Failed to alloc extend array!\n"); 1219 return; 1220 } 1221 1222 /* 1223 * Install a global async callback. 1224 */ 1225 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1226 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1227 1228 if (status == CAM_REQ_CMP) { 1229 /* Register the async callbacks of interrest */ 1230 struct ccb_setasync csa; /* 1231 * This is an immediate CCB, 1232 * so using the stack is OK 1233 */ 1234 xpt_setup_ccb(&csa.ccb_h, path, 5); 1235 csa.ccb_h.func_code = XPT_SASYNC_CB; 1236 csa.event_enable = AC_FOUND_DEVICE; 1237 csa.callback = saasync; 1238 csa.callback_arg = NULL; 1239 xpt_action((union ccb *)&csa); 1240 status = csa.ccb_h.status; 1241 xpt_free_path(path); 1242 } 1243 1244 if (status != CAM_REQ_CMP) { 1245 printf("sa: Failed to attach master async callback " 1246 "due to status 0x%x!\n", status); 1247 } 1248} 1249 1250static void 1251saoninvalidate(struct cam_periph *periph) 1252{ 1253 struct sa_softc *softc; 1254 struct bio *q_bp; 1255 struct ccb_setasync csa; 1256 int s; 1257 1258 softc = (struct sa_softc *)periph->softc; 1259 1260 /* 1261 * De-register any async callbacks. 1262 */ 1263 xpt_setup_ccb(&csa.ccb_h, periph->path, 1264 /* priority */ 5); 1265 csa.ccb_h.func_code = XPT_SASYNC_CB; 1266 csa.event_enable = 0; 1267 csa.callback = saasync; 1268 csa.callback_arg = periph; 1269 xpt_action((union ccb *)&csa); 1270 1271 softc->flags |= SA_FLAG_INVALID; 1272 1273 /* 1274 * Although the oninvalidate() routines are always called at 1275 * splsoftcam, we need to be at splbio() here to keep the buffer 1276 * queue from being modified while we traverse it. 1277 */ 1278 s = splbio(); 1279 1280 /* 1281 * Return all queued I/O with ENXIO. 1282 * XXX Handle any transactions queued to the card 1283 * with XPT_ABORT_CCB. 1284 */ 1285 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1286 bioq_remove(&softc->bio_queue, q_bp); 1287 q_bp->bio_resid = q_bp->bio_bcount; 1288 q_bp->bio_error = ENXIO; 1289 q_bp->bio_flags |= BIO_ERROR; 1290 biodone(q_bp); 1291 } 1292 softc->queue_count = 0; 1293 splx(s); 1294 1295 xpt_print_path(periph->path); 1296 printf("lost device\n"); 1297 1298} 1299 1300static void 1301sacleanup(struct cam_periph *periph) 1302{ 1303 struct sa_softc *softc; 1304 int i; 1305 1306 softc = (struct sa_softc *)periph->softc; 1307 1308 devstat_remove_entry(&softc->device_stats); 1309 1310 destroy_dev(softc->devs.ctl_dev); 1311 1312 for (i = 0; i < SA_NUM_MODES; i++) { 1313 destroy_dev(softc->devs.mode_devs[i].r_dev); 1314 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1315 destroy_dev(softc->devs.mode_devs[i].er_dev); 1316 } 1317 1318 cam_extend_release(saperiphs, periph->unit_number); 1319 xpt_print_path(periph->path); 1320 printf("removing device entry\n"); 1321 free(softc, M_DEVBUF); 1322} 1323 1324static void 1325saasync(void *callback_arg, u_int32_t code, 1326 struct cam_path *path, void *arg) 1327{ 1328 struct cam_periph *periph; 1329 1330 periph = (struct cam_periph *)callback_arg; 1331 switch (code) { 1332 case AC_FOUND_DEVICE: 1333 { 1334 struct ccb_getdev *cgd; 1335 cam_status status; 1336 1337 cgd = (struct ccb_getdev *)arg; 1338 1339 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1340 break; 1341 1342 /* 1343 * Allocate a peripheral instance for 1344 * this device and start the probe 1345 * process. 1346 */ 1347 status = cam_periph_alloc(saregister, saoninvalidate, 1348 sacleanup, sastart, 1349 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1350 saasync, AC_FOUND_DEVICE, cgd); 1351 1352 if (status != CAM_REQ_CMP 1353 && status != CAM_REQ_INPROG) 1354 printf("saasync: Unable to probe new device " 1355 "due to status 0x%x\n", status); 1356 break; 1357 } 1358 default: 1359 cam_periph_async(periph, code, path, arg); 1360 break; 1361 } 1362} 1363 1364static cam_status 1365saregister(struct cam_periph *periph, void *arg) 1366{ 1367 struct sa_softc *softc; 1368 struct ccb_setasync csa; 1369 struct ccb_getdev *cgd; 1370 caddr_t match; 1371 int i; 1372 1373 cgd = (struct ccb_getdev *)arg; 1374 if (periph == NULL) { 1375 printf("saregister: periph was NULL!!\n"); 1376 return (CAM_REQ_CMP_ERR); 1377 } 1378 1379 if (cgd == NULL) { 1380 printf("saregister: no getdev CCB, can't register device\n"); 1381 return (CAM_REQ_CMP_ERR); 1382 } 1383 1384 softc = (struct sa_softc *) 1385 malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT | M_ZERO); 1386 if (softc == NULL) { 1387 printf("saregister: Unable to probe new device. " 1388 "Unable to allocate softc\n"); 1389 return (CAM_REQ_CMP_ERR); 1390 } 1391 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1392 softc->state = SA_STATE_NORMAL; 1393 softc->fileno = (daddr_t) -1; 1394 softc->blkno = (daddr_t) -1; 1395 1396 bioq_init(&softc->bio_queue); 1397 periph->softc = softc; 1398 cam_extend_set(saperiphs, periph->unit_number, periph); 1399 1400 /* 1401 * See if this device has any quirks. 1402 */ 1403 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1404 (caddr_t)sa_quirk_table, 1405 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1406 sizeof(*sa_quirk_table), scsi_inquiry_match); 1407 1408 if (match != NULL) { 1409 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1410 softc->last_media_blksize = 1411 ((struct sa_quirk_entry *)match)->prefblk; 1412#ifdef CAMDEBUG 1413 xpt_print_path(periph->path); 1414 printf("found quirk entry %d\n", (int) 1415 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1416#endif 1417 } else 1418 softc->quirks = SA_QUIRK_NONE; 1419 1420 /* 1421 * The SA driver supports a blocksize, but we don't know the 1422 * blocksize until we media is inserted. So, set a flag to 1423 * indicate that the blocksize is unavailable right now. 1424 */ 1425 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1426 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1427 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1428 1429 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1430 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1431 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1432 1433 for (i = 0; i < SA_NUM_MODES; i++) { 1434 1435 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1436 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1437 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1438 periph->periph_name, periph->unit_number, i); 1439 1440 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1441 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1442 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1443 periph->periph_name, periph->unit_number, i); 1444 1445 1446 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1447 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1448 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1449 periph->periph_name, periph->unit_number, i); 1450 1451 /* 1452 * Make the (well known) aliases for the first mode. 1453 */ 1454 if (i == 0) { 1455 make_dev_alias(softc->devs.mode_devs[i].r_dev, 1456 "r%s%d", periph->periph_name, periph->unit_number); 1457 make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1458 "nr%s%d", periph->periph_name, periph->unit_number); 1459 make_dev_alias(softc->devs.mode_devs[i].er_dev, 1460 "er%s%d", periph->periph_name, periph->unit_number); 1461 } 1462 } 1463 1464 /* 1465 * Add an async callback so that we get 1466 * notified if this device goes away. 1467 */ 1468 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1469 csa.ccb_h.func_code = XPT_SASYNC_CB; 1470 csa.event_enable = AC_LOST_DEVICE; 1471 csa.callback = saasync; 1472 csa.callback_arg = periph; 1473 xpt_action((union ccb *)&csa); 1474 1475 xpt_announce_periph(periph, NULL); 1476 1477 return (CAM_REQ_CMP); 1478} 1479 1480static void 1481sastart(struct cam_periph *periph, union ccb *start_ccb) 1482{ 1483 struct sa_softc *softc; 1484 1485 softc = (struct sa_softc *)periph->softc; 1486 1487 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1488 1489 1490 switch (softc->state) { 1491 case SA_STATE_NORMAL: 1492 { 1493 /* Pull a buffer from the queue and get going on it */ 1494 struct bio *bp; 1495 int s; 1496 1497 /* 1498 * See if there is a buf with work for us to do.. 1499 */ 1500 s = splbio(); 1501 bp = bioq_first(&softc->bio_queue); 1502 if (periph->immediate_priority <= periph->pinfo.priority) { 1503 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1504 ("queuing for immediate ccb\n")); 1505 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1506 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1507 periph_links.sle); 1508 periph->immediate_priority = CAM_PRIORITY_NONE; 1509 splx(s); 1510 wakeup(&periph->ccb_list); 1511 } else if (bp == NULL) { 1512 splx(s); 1513 xpt_release_ccb(start_ccb); 1514 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1515 struct bio *done_bp; 1516 softc->queue_count--; 1517 bioq_remove(&softc->bio_queue, bp); 1518 bp->bio_resid = bp->bio_bcount; 1519 bp->bio_flags |= BIO_ERROR; 1520 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1521 if (bp->bio_cmd == BIO_WRITE) 1522 bp->bio_error = ENOSPC; 1523 else 1524 bp->bio_error = EIO; 1525 } 1526 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1527 bp->bio_error = EIO; 1528 } 1529 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1530 bp->bio_error = EIO; 1531 } 1532 done_bp = bp; 1533 bp = bioq_first(&softc->bio_queue); 1534 /* 1535 * Only if we have no other buffers queued up 1536 * do we clear the pending error flag. 1537 */ 1538 if (bp == NULL) 1539 softc->flags &= ~SA_FLAG_ERR_PENDING; 1540 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1541 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1542 "%d more buffers queued up\n", 1543 (softc->flags & SA_FLAG_ERR_PENDING), 1544 (bp != NULL)? "not " : " ", softc->queue_count)); 1545 splx(s); 1546 xpt_release_ccb(start_ccb); 1547 biodone(done_bp); 1548 } else { 1549 u_int32_t length; 1550 1551 bioq_remove(&softc->bio_queue, bp); 1552 softc->queue_count--; 1553 1554 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1555 if (softc->blk_shift != 0) { 1556 length = 1557 bp->bio_bcount >> softc->blk_shift; 1558 } else if (softc->media_blksize != 0) { 1559 length = bp->bio_bcount / 1560 softc->media_blksize; 1561 } else { 1562 bp->bio_error = EIO; 1563 xpt_print_path(periph->path); 1564 printf("zero blocksize for " 1565 "FIXED length writes?\n"); 1566 splx(s); 1567 biodone(bp); 1568 break; 1569 } 1570 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1571 ("Fixed Record Count is %d\n", length)); 1572 } else { 1573 length = bp->bio_bcount; 1574 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1575 ("Variable Record Count is %d\n", length)); 1576 } 1577 devstat_start_transaction(&softc->device_stats); 1578 /* 1579 * Some people have theorized that we should 1580 * suppress illegal length indication if we are 1581 * running in variable block mode so that we don't 1582 * have to request sense every time our requested 1583 * block size is larger than the written block. 1584 * The residual information from the ccb allows 1585 * us to identify this situation anyway. The only 1586 * problem with this is that we will not get 1587 * information about blocks that are larger than 1588 * our read buffer unless we set the block size 1589 * in the mode page to something other than 0. 1590 * 1591 * I believe that this is a non-issue. If user apps 1592 * don't adjust their read size to match our record 1593 * size, that's just life. Anyway, the typical usage 1594 * would be to issue, e.g., 64KB reads and occasionally 1595 * have to do deal with 512 byte or 1KB intermediate 1596 * records. 1597 */ 1598 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1599 MTIO_DSREG_RD : MTIO_DSREG_WR; 1600 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1601 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1602 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1603 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1604 120 * 60 * 1000); 1605 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1606 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1607 start_ccb->ccb_h.ccb_bp = bp; 1608 bp = bioq_first(&softc->bio_queue); 1609 splx(s); 1610 xpt_action(start_ccb); 1611 } 1612 1613 if (bp != NULL) { 1614 /* Have more work to do, so ensure we stay scheduled */ 1615 xpt_schedule(periph, 1); 1616 } 1617 break; 1618 } 1619 case SA_STATE_ABNORMAL: 1620 default: 1621 panic("state 0x%x in sastart", softc->state); 1622 break; 1623 } 1624} 1625 1626 1627static void 1628sadone(struct cam_periph *periph, union ccb *done_ccb) 1629{ 1630 struct sa_softc *softc; 1631 struct ccb_scsiio *csio; 1632 1633 softc = (struct sa_softc *)periph->softc; 1634 csio = &done_ccb->csio; 1635 switch (CCB_Type(csio)) { 1636 case SA_CCB_BUFFER_IO: 1637 { 1638 struct bio *bp; 1639 int error; 1640 1641 softc->dsreg = MTIO_DSREG_REST; 1642 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1643 error = 0; 1644 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1645 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1646 /* 1647 * A retry was scheduled, so just return. 1648 */ 1649 return; 1650 } 1651 } 1652 1653 if (error == EIO) { 1654 int s; 1655 struct bio *q_bp; 1656 1657 /* 1658 * Catastrophic error. Mark the tape as frozen 1659 * (we no longer know tape position). 1660 * 1661 * Return all queued I/O with EIO, and unfreeze 1662 * our queue so that future transactions that 1663 * attempt to fix this problem can get to the 1664 * device. 1665 * 1666 */ 1667 1668 s = splbio(); 1669 softc->flags |= SA_FLAG_TAPE_FROZEN; 1670 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1671 bioq_remove(&softc->bio_queue, q_bp); 1672 q_bp->bio_resid = q_bp->bio_bcount; 1673 q_bp->bio_error = EIO; 1674 q_bp->bio_flags |= BIO_ERROR; 1675 biodone(q_bp); 1676 } 1677 splx(s); 1678 } 1679 if (error != 0) { 1680 bp->bio_resid = bp->bio_bcount; 1681 bp->bio_error = error; 1682 bp->bio_flags |= BIO_ERROR; 1683 /* 1684 * In the error case, position is updated in saerror. 1685 */ 1686 } else { 1687 bp->bio_resid = csio->resid; 1688 bp->bio_error = 0; 1689 if (csio->resid != 0) { 1690 bp->bio_flags |= BIO_ERROR; 1691 } 1692 if (bp->bio_cmd == BIO_WRITE) { 1693 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1694 softc->filemarks = 0; 1695 } 1696 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1697 (softc->blkno != (daddr_t) -1)) { 1698 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1699 u_int32_t l; 1700 if (softc->blk_shift != 0) { 1701 l = bp->bio_bcount >> 1702 softc->blk_shift; 1703 } else { 1704 l = bp->bio_bcount / 1705 softc->media_blksize; 1706 } 1707 softc->blkno += (daddr_t) l; 1708 } else { 1709 softc->blkno++; 1710 } 1711 } 1712 } 1713 /* 1714 * If we had an error (immediate or pending), 1715 * release the device queue now. 1716 */ 1717 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1718 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1719#ifdef CAMDEBUG 1720 if (error || bp->bio_resid) { 1721 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1722 ("error %d resid %ld count %ld\n", error, 1723 bp->bio_resid, bp->bio_bcount)); 1724 } 1725#endif 1726 devstat_end_transaction_bio(&softc->device_stats, bp); 1727 biodone(bp); 1728 break; 1729 } 1730 case SA_CCB_WAITING: 1731 { 1732 /* Caller will release the CCB */ 1733 wakeup(&done_ccb->ccb_h.cbfcnp); 1734 return; 1735 } 1736 } 1737 xpt_release_ccb(done_ccb); 1738} 1739 1740/* 1741 * Mount the tape (make sure it's ready for I/O). 1742 */ 1743static int 1744samount(struct cam_periph *periph, int oflags, dev_t dev) 1745{ 1746 struct sa_softc *softc; 1747 union ccb *ccb; 1748 int error; 1749 1750 /* 1751 * oflags can be checked for 'kind' of open (read-only check) - later 1752 * dev can be checked for a control-mode or compression open - later 1753 */ 1754 UNUSED_PARAMETER(oflags); 1755 UNUSED_PARAMETER(dev); 1756 1757 1758 softc = (struct sa_softc *)periph->softc; 1759 1760 /* 1761 * This should determine if something has happend since the last 1762 * open/mount that would invalidate the mount. We do *not* want 1763 * to retry this command- we just want the status. But we only 1764 * do this if we're mounted already- if we're not mounted, 1765 * we don't care about the unit read state and can instead use 1766 * this opportunity to attempt to reserve the tape unit. 1767 */ 1768 1769 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1770 ccb = cam_periph_getccb(periph, 1); 1771 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1772 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1773 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1774 &softc->device_stats); 1775 QFRLS(ccb); 1776 if (error == ENXIO) { 1777 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1778 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1779 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1780 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1781 &softc->device_stats); 1782 QFRLS(ccb); 1783 } else if (error) { 1784 /* 1785 * We don't need to freeze the tape because we 1786 * will now attempt to rewind/load it. 1787 */ 1788 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1789 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1790 xpt_print_path(ccb->ccb_h.path); 1791 printf("error %d on TUR in samount\n", error); 1792 } 1793 } 1794 } else { 1795 error = sareservereleaseunit(periph, TRUE); 1796 if (error) { 1797 return (error); 1798 } 1799 ccb = cam_periph_getccb(periph, 1); 1800 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1801 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1802 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1803 &softc->device_stats); 1804 QFRLS(ccb); 1805 } 1806 1807 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1808 struct scsi_read_block_limits_data *rblim = NULL; 1809 int comp_enabled, comp_supported; 1810 u_int8_t write_protect, guessing = 0; 1811 1812 /* 1813 * Clear out old state. 1814 */ 1815 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1816 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1817 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1818 softc->filemarks = 0; 1819 1820 /* 1821 * *Very* first off, make sure we're loaded to BOT. 1822 */ 1823 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1824 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1825 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1826 &softc->device_stats); 1827 QFRLS(ccb); 1828 1829 /* 1830 * In case this doesn't work, do a REWIND instead 1831 */ 1832 if (error) { 1833 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1834 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1835 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1836 &softc->device_stats); 1837 QFRLS(ccb); 1838 } 1839 if (error) { 1840 xpt_release_ccb(ccb); 1841 goto exit; 1842 } 1843 1844 /* 1845 * Do a dummy test read to force access to the 1846 * media so that the drive will really know what's 1847 * there. We actually don't really care what the 1848 * blocksize on tape is and don't expect to really 1849 * read a full record. 1850 */ 1851 rblim = (struct scsi_read_block_limits_data *) 1852 malloc(8192, M_TEMP, M_WAITOK); 1853 if (rblim == NULL) { 1854 xpt_print_path(ccb->ccb_h.path); 1855 printf("no memory for test read\n"); 1856 xpt_release_ccb(ccb); 1857 error = ENOMEM; 1858 goto exit; 1859 } 1860 1861 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1862 scsi_sa_read_write(&ccb->csio, 0, sadone, 1863 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1864 (void *) rblim, 8192, SSD_FULL_SIZE, 1865 120 * 60 * 1000); 1866 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1867 &softc->device_stats); 1868 QFRLS(ccb); 1869 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1870 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1871 error = cam_periph_runccb(ccb, saerror, 0, 1872 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1873 &softc->device_stats); 1874 QFRLS(ccb); 1875 if (error) { 1876 xpt_print_path(ccb->ccb_h.path); 1877 printf("unable to rewind after test read\n"); 1878 xpt_release_ccb(ccb); 1879 goto exit; 1880 } 1881 } 1882 1883 /* 1884 * Next off, determine block limits. 1885 */ 1886 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1887 rblim, SSD_FULL_SIZE, 5000); 1888 1889 error = cam_periph_runccb(ccb, saerror, 0, 1890 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1891 &softc->device_stats); 1892 QFRLS(ccb); 1893 xpt_release_ccb(ccb); 1894 1895 if (error != 0) { 1896 /* 1897 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1898 * a MANDATORY command. Anyway- it doesn't matter- 1899 * we can proceed anyway. 1900 */ 1901 softc->blk_gran = 0; 1902 softc->max_blk = ~0; 1903 softc->min_blk = 0; 1904 } else { 1905 if (softc->scsi_rev >= SCSI_REV_3) { 1906 softc->blk_gran = RBL_GRAN(rblim); 1907 } else { 1908 softc->blk_gran = 0; 1909 } 1910 /* 1911 * We take max_blk == min_blk to mean a default to 1912 * fixed mode- but note that whatever we get out of 1913 * sagetparams below will actually determine whether 1914 * we are actually *in* fixed mode. 1915 */ 1916 softc->max_blk = scsi_3btoul(rblim->maximum); 1917 softc->min_blk = scsi_2btoul(rblim->minimum); 1918 1919 1920 } 1921 /* 1922 * Next, perform a mode sense to determine 1923 * current density, blocksize, compression etc. 1924 */ 1925 error = sagetparams(periph, SA_PARAM_ALL, 1926 &softc->media_blksize, 1927 &softc->media_density, 1928 &softc->media_numblks, 1929 &softc->buffer_mode, &write_protect, 1930 &softc->speed, &comp_supported, 1931 &comp_enabled, &softc->comp_algorithm, 1932 NULL); 1933 1934 if (error != 0) { 1935 /* 1936 * We could work a little harder here. We could 1937 * adjust our attempts to get information. It 1938 * might be an ancient tape drive. If someone 1939 * nudges us, we'll do that. 1940 */ 1941 goto exit; 1942 } 1943 1944 /* 1945 * If no quirk has determined that this is a device that is 1946 * preferred to be in fixed or variable mode, now is the time 1947 * to find out. 1948 */ 1949 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1950 guessing = 1; 1951 /* 1952 * This could be expensive to find out. Luckily we 1953 * only need to do this once. If we start out in 1954 * 'default' mode, try and set ourselves to one 1955 * of the densities that would determine a wad 1956 * of other stuff. Go from highest to lowest. 1957 */ 1958 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1959 int i; 1960 static u_int8_t ctry[] = { 1961 SCSI_DENSITY_HALFINCH_PE, 1962 SCSI_DENSITY_HALFINCH_6250C, 1963 SCSI_DENSITY_HALFINCH_6250, 1964 SCSI_DENSITY_HALFINCH_1600, 1965 SCSI_DENSITY_HALFINCH_800, 1966 SCSI_DENSITY_QIC_4GB, 1967 SCSI_DENSITY_QIC_2GB, 1968 SCSI_DENSITY_QIC_525_320, 1969 SCSI_DENSITY_QIC_150, 1970 SCSI_DENSITY_QIC_120, 1971 SCSI_DENSITY_QIC_24, 1972 SCSI_DENSITY_QIC_11_9TRK, 1973 SCSI_DENSITY_QIC_11_4TRK, 1974 SCSI_DENSITY_QIC_1320, 1975 SCSI_DENSITY_QIC_3080, 1976 0 1977 }; 1978 for (i = 0; ctry[i]; i++) { 1979 error = sasetparams(periph, 1980 SA_PARAM_DENSITY, 0, ctry[i], 1981 0, SF_NO_PRINT); 1982 if (error == 0) { 1983 softc->media_density = ctry[i]; 1984 break; 1985 } 1986 } 1987 } 1988 switch (softc->media_density) { 1989 case SCSI_DENSITY_QIC_11_4TRK: 1990 case SCSI_DENSITY_QIC_11_9TRK: 1991 case SCSI_DENSITY_QIC_24: 1992 case SCSI_DENSITY_QIC_120: 1993 case SCSI_DENSITY_QIC_150: 1994 case SCSI_DENSITY_QIC_525_320: 1995 case SCSI_DENSITY_QIC_1320: 1996 case SCSI_DENSITY_QIC_3080: 1997 softc->quirks &= ~SA_QUIRK_2FM; 1998 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1999 softc->last_media_blksize = 512; 2000 break; 2001 case SCSI_DENSITY_QIC_4GB: 2002 case SCSI_DENSITY_QIC_2GB: 2003 softc->quirks &= ~SA_QUIRK_2FM; 2004 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2005 softc->last_media_blksize = 1024; 2006 break; 2007 default: 2008 softc->last_media_blksize = 2009 softc->media_blksize; 2010 softc->quirks |= SA_QUIRK_VARIABLE; 2011 break; 2012 } 2013 } 2014 2015 /* 2016 * If no quirk has determined that this is a device that needs 2017 * to have 2 Filemarks at EOD, now is the time to find out. 2018 */ 2019 2020 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2021 switch (softc->media_density) { 2022 case SCSI_DENSITY_HALFINCH_800: 2023 case SCSI_DENSITY_HALFINCH_1600: 2024 case SCSI_DENSITY_HALFINCH_6250: 2025 case SCSI_DENSITY_HALFINCH_6250C: 2026 case SCSI_DENSITY_HALFINCH_PE: 2027 softc->quirks &= ~SA_QUIRK_1FM; 2028 softc->quirks |= SA_QUIRK_2FM; 2029 break; 2030 default: 2031 break; 2032 } 2033 } 2034 2035 /* 2036 * Now validate that some info we got makes sense. 2037 */ 2038 if ((softc->max_blk < softc->media_blksize) || 2039 (softc->min_blk > softc->media_blksize && 2040 softc->media_blksize)) { 2041 xpt_print_path(ccb->ccb_h.path); 2042 printf("BLOCK LIMITS (%d..%d) could not match current " 2043 "block settings (%d)- adjusting\n", softc->min_blk, 2044 softc->max_blk, softc->media_blksize); 2045 softc->max_blk = softc->min_blk = 2046 softc->media_blksize; 2047 } 2048 2049 /* 2050 * Now put ourselves into the right frame of mind based 2051 * upon quirks... 2052 */ 2053tryagain: 2054 /* 2055 * If we want to be in FIXED mode and our current blocksize 2056 * is not equal to our last blocksize (if nonzero), try and 2057 * set ourselves to this last blocksize (as the 'preferred' 2058 * block size). The initial quirkmatch at registry sets the 2059 * initial 'last' blocksize. If, for whatever reason, this 2060 * 'last' blocksize is zero, set the blocksize to 512, 2061 * or min_blk if that's larger. 2062 */ 2063 if ((softc->quirks & SA_QUIRK_FIXED) && 2064 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2065 (softc->media_blksize != softc->last_media_blksize)) { 2066 softc->media_blksize = softc->last_media_blksize; 2067 if (softc->media_blksize == 0) { 2068 softc->media_blksize = 512; 2069 if (softc->media_blksize < softc->min_blk) { 2070 softc->media_blksize = softc->min_blk; 2071 } 2072 } 2073 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2074 softc->media_blksize, 0, 0, SF_NO_PRINT); 2075 if (error) { 2076 xpt_print_path(ccb->ccb_h.path); 2077 printf("unable to set fixed blocksize to %d\n", 2078 softc->media_blksize); 2079 goto exit; 2080 } 2081 } 2082 2083 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2084 (softc->media_blksize != 0)) { 2085 softc->last_media_blksize = softc->media_blksize; 2086 softc->media_blksize = 0; 2087 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2088 0, 0, 0, SF_NO_PRINT); 2089 if (error) { 2090 /* 2091 * If this fails and we were guessing, just 2092 * assume that we got it wrong and go try 2093 * fixed block mode. Don't even check against 2094 * density code at this point. 2095 */ 2096 if (guessing) { 2097 softc->quirks &= ~SA_QUIRK_VARIABLE; 2098 softc->quirks |= SA_QUIRK_FIXED; 2099 if (softc->last_media_blksize == 0) 2100 softc->last_media_blksize = 512; 2101 goto tryagain; 2102 } 2103 xpt_print_path(ccb->ccb_h.path); 2104 printf("unable to set variable blocksize\n"); 2105 goto exit; 2106 } 2107 } 2108 2109 /* 2110 * Now that we have the current block size, 2111 * set up some parameters for sastart's usage. 2112 */ 2113 if (softc->media_blksize) { 2114 softc->flags |= SA_FLAG_FIXED; 2115 if (powerof2(softc->media_blksize)) { 2116 softc->blk_shift = 2117 ffs(softc->media_blksize) - 1; 2118 softc->blk_mask = softc->media_blksize - 1; 2119 } else { 2120 softc->blk_mask = ~0; 2121 softc->blk_shift = 0; 2122 } 2123 } else { 2124 /* 2125 * The SCSI-3 spec allows 0 to mean "unspecified". 2126 * The SCSI-1 spec allows 0 to mean 'infinite'. 2127 * 2128 * Either works here. 2129 */ 2130 if (softc->max_blk == 0) { 2131 softc->max_blk = ~0; 2132 } 2133 softc->blk_shift = 0; 2134 if (softc->blk_gran != 0) { 2135 softc->blk_mask = softc->blk_gran - 1; 2136 } else { 2137 softc->blk_mask = 0; 2138 } 2139 } 2140 2141 if (write_protect) 2142 softc->flags |= SA_FLAG_TAPE_WP; 2143 2144 if (comp_supported) { 2145 if (softc->saved_comp_algorithm == 0) 2146 softc->saved_comp_algorithm = 2147 softc->comp_algorithm; 2148 softc->flags |= SA_FLAG_COMP_SUPP; 2149 if (comp_enabled) 2150 softc->flags |= SA_FLAG_COMP_ENABLED; 2151 } else 2152 softc->flags |= SA_FLAG_COMP_UNSUPP; 2153 2154 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2155 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2156 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2157 0, 0, SF_NO_PRINT); 2158 if (error == 0) 2159 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2160 xpt_print_path(ccb->ccb_h.path); 2161 printf("unable to set buffered mode\n"); 2162 error = 0; /* not an error */ 2163 } 2164 2165 2166 if (error == 0) { 2167 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2168 } 2169exit: 2170 if (rblim != NULL) 2171 free(rblim, M_TEMP); 2172 2173 if (error != 0) { 2174 softc->dsreg = MTIO_DSREG_NIL; 2175 } else { 2176 softc->fileno = softc->blkno = 0; 2177 softc->dsreg = MTIO_DSREG_REST; 2178 } 2179#ifdef SA_1FM_AT_EOD 2180 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2181 softc->quirks |= SA_QUIRK_1FM; 2182#else 2183 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2184 softc->quirks |= SA_QUIRK_2FM; 2185#endif 2186 } else 2187 xpt_release_ccb(ccb); 2188 2189 /* 2190 * If we return an error, we're not mounted any more, 2191 * so release any device reservation. 2192 */ 2193 if (error != 0) { 2194 (void) sareservereleaseunit(periph, FALSE); 2195 } 2196 return (error); 2197} 2198 2199/* 2200 * How many filemarks do we need to write if we were to terminate the 2201 * tape session right now? Note that this can be a negative number 2202 */ 2203 2204static int 2205samarkswanted(struct cam_periph *periph) 2206{ 2207 int markswanted; 2208 struct sa_softc *softc; 2209 2210 softc = (struct sa_softc *)periph->softc; 2211 markswanted = 0; 2212 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2213 markswanted++; 2214 if (softc->quirks & SA_QUIRK_2FM) 2215 markswanted++; 2216 } 2217 markswanted -= softc->filemarks; 2218 return (markswanted); 2219} 2220 2221static int 2222sacheckeod(struct cam_periph *periph) 2223{ 2224 int error; 2225 int markswanted; 2226 struct sa_softc *softc; 2227 2228 softc = (struct sa_softc *)periph->softc; 2229 markswanted = samarkswanted(periph); 2230 2231 if (markswanted > 0) { 2232 error = sawritefilemarks(periph, markswanted, FALSE); 2233 } else { 2234 error = 0; 2235 } 2236 return (error); 2237} 2238 2239static int 2240saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2241{ 2242 static const char *toobig = 2243 "%d-byte tape record bigger than suplied buffer\n"; 2244 struct cam_periph *periph; 2245 struct sa_softc *softc; 2246 struct ccb_scsiio *csio; 2247 struct scsi_sense_data *sense; 2248 u_int32_t resid = 0; 2249 int32_t info = 0; 2250 int error_code, sense_key, asc, ascq; 2251 int error, defer_action; 2252 2253 periph = xpt_path_periph(ccb->ccb_h.path); 2254 softc = (struct sa_softc *)periph->softc; 2255 csio = &ccb->csio; 2256 sense = &csio->sense_data; 2257 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2258 error = 0; 2259 2260 /* 2261 * Calculate/latch up, any residuals... 2262 */ 2263 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2264 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2265 info = (int32_t) scsi_4btoul(sense->info); 2266 resid = info; 2267 if ((softc->flags & SA_FLAG_FIXED) != 0) 2268 resid *= softc->media_blksize; 2269 } else { 2270 resid = csio->dxfer_len; 2271 info = resid; 2272 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2273 if (softc->media_blksize) 2274 info /= softc->media_blksize; 2275 } 2276 } 2277 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2278 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2279 sizeof (struct scsi_sense_data)); 2280 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2281 (int) csio->cdb_len); 2282 softc->last_io_resid = resid; 2283 } else { 2284 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2285 sizeof (struct scsi_sense_data)); 2286 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2287 (int) csio->cdb_len); 2288 softc->last_ctl_resid = resid; 2289 } 2290 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ " 2291 "0x%x 0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, 2292 asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, 2293 csio->dxfer_len)); 2294 } else { 2295 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", 2296 csio->ccb_h.status & CAM_STATUS_MASK)); 2297 } 2298 2299 /* 2300 * If it's neither a SCSI Check Condition Error nor a non-read/write 2301 * command, let the common code deal with it the error setting. 2302 */ 2303 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2304 (CCB_Type(csio) == SA_CCB_WAITING)) { 2305 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2306 } 2307 2308 /* 2309 * Calculate whether we'll defer action. 2310 */ 2311 2312 if (resid > 0 && resid < csio->dxfer_len && 2313 (softc->flags & SA_FLAG_FIXED) != 0) { 2314 defer_action = TRUE; 2315 } else { 2316 defer_action = FALSE; 2317 } 2318 2319 /* 2320 * Handle filemark, end of tape, mismatched record sizes.... 2321 * From this point out, we're only handling read/write cases. 2322 * Handle writes && reads differently. 2323 */ 2324 2325 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2326 if (sense->flags & SSD_FILEMARK) { 2327 xpt_print_path(csio->ccb_h.path); 2328 printf("filemark detected on write?\n"); 2329 if (softc->fileno != (daddr_t) -1) { 2330 softc->fileno++; 2331 softc->blkno = 0; 2332 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2333 } 2334 } 2335 if (sense->flags & SSD_EOM) { 2336 csio->resid = resid; 2337 if (defer_action) { 2338 error = -1; 2339 softc->flags |= SA_FLAG_EOM_PENDING; 2340 } else { 2341 error = ENOSPC; 2342 } 2343 } 2344 } else { 2345 if (sense_key == SSD_KEY_BLANK_CHECK) { 2346 csio->resid = resid; 2347 if (defer_action) { 2348 error = -1; 2349 softc->flags |= SA_FLAG_EOM_PENDING; 2350 } else { 2351 error = EIO; 2352 } 2353 } 2354 if (sense->flags & SSD_FILEMARK) { 2355 csio->resid = resid; 2356 if (defer_action) { 2357 error = -1; 2358 softc->flags |= SA_FLAG_EOF_PENDING; 2359 } 2360 /* 2361 * Unconditionally, if we detected a filemark on a read, 2362 * mark that we've run moved a file ahead. 2363 */ 2364 if (softc->fileno != (daddr_t) -1) { 2365 softc->fileno++; 2366 softc->blkno = 0; 2367 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2368 } 2369 } 2370 } 2371 /* 2372 * Incorrect Length usually applies to read, but can apply to writes. 2373 */ 2374 if (error == 0 && (sense->flags & SSD_ILI)) { 2375 if (info < 0) { 2376 xpt_print_path(csio->ccb_h.path); 2377 printf(toobig, csio->dxfer_len - info); 2378 csio->resid = csio->dxfer_len; 2379 error = EIO; 2380 } else { 2381 csio->resid = resid; 2382 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2383 if (defer_action) 2384 softc->flags |= SA_FLAG_EIO_PENDING; 2385 else 2386 error = EIO; 2387 } 2388 /* 2389 * Bump the block number if we hadn't seen a filemark. 2390 * Do this independent of errors (we've moved anyway). 2391 */ 2392 if ((sense->flags & SSD_FILEMARK) == 0) { 2393 if (softc->blkno != (daddr_t) -1) { 2394 softc->blkno++; 2395 csio->ccb_h.ccb_pflags |= 2396 SA_POSITION_UPDATED; 2397 } 2398 } 2399 } 2400 } 2401 if (error == 0) 2402 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2403 2404 if (error == -1) 2405 return (0); 2406 else 2407 return (error); 2408} 2409 2410static int 2411sagetparams(struct cam_periph *periph, sa_params params_to_get, 2412 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2413 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2414 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2415 sa_comp_t *tcs) 2416{ 2417 union ccb *ccb; 2418 void *mode_buffer; 2419 struct scsi_mode_header_6 *mode_hdr; 2420 struct scsi_mode_blk_desc *mode_blk; 2421 int mode_buffer_len; 2422 struct sa_softc *softc; 2423 u_int8_t cpage; 2424 int error; 2425 cam_status status; 2426 2427 softc = (struct sa_softc *)periph->softc; 2428 ccb = cam_periph_getccb(periph, 1); 2429 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2430 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2431 else 2432 cpage = SA_DATA_COMPRESSION_PAGE; 2433 2434retry: 2435 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2436 2437 if (params_to_get & SA_PARAM_COMPRESSION) { 2438 if (softc->quirks & SA_QUIRK_NOCOMP) { 2439 *comp_supported = FALSE; 2440 params_to_get &= ~SA_PARAM_COMPRESSION; 2441 } else 2442 mode_buffer_len += sizeof (sa_comp_t); 2443 } 2444 2445 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2446 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2447 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2448 2449 /* it is safe to retry this */ 2450 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2451 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2452 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2453 SSD_FULL_SIZE, 5000); 2454 2455 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2456 &softc->device_stats); 2457 QFRLS(ccb); 2458 2459 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2460 2461 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2462 /* 2463 * Hmm. Let's see if we can try another page... 2464 * If we've already done that, give up on compression 2465 * for this device and remember this for the future 2466 * and attempt the request without asking for compression 2467 * info. 2468 */ 2469 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2470 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2471 goto retry; 2472 } 2473 softc->quirks |= SA_QUIRK_NOCOMP; 2474 free(mode_buffer, M_TEMP); 2475 goto retry; 2476 } else if (status == CAM_SCSI_STATUS_ERROR) { 2477 /* Tell the user about the fatal error. */ 2478 scsi_sense_print(&ccb->csio); 2479 goto sagetparamsexit; 2480 } 2481 2482 /* 2483 * If the user only wants the compression information, and 2484 * the device doesn't send back the block descriptor, it's 2485 * no big deal. If the user wants more than just 2486 * compression, though, and the device doesn't pass back the 2487 * block descriptor, we need to send another mode sense to 2488 * get the block descriptor. 2489 */ 2490 if ((mode_hdr->blk_desc_len == 0) && 2491 (params_to_get & SA_PARAM_COMPRESSION) && 2492 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2493 2494 /* 2495 * Decrease the mode buffer length by the size of 2496 * the compression page, to make sure the data 2497 * there doesn't get overwritten. 2498 */ 2499 mode_buffer_len -= sizeof (sa_comp_t); 2500 2501 /* 2502 * Now move the compression page that we presumably 2503 * got back down the memory chunk a little bit so 2504 * it doesn't get spammed. 2505 */ 2506 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2507 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2508 2509 /* 2510 * Now, we issue another mode sense and just ask 2511 * for the block descriptor, etc. 2512 */ 2513 2514 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2515 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2516 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2517 2518 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2519 &softc->device_stats); 2520 QFRLS(ccb); 2521 2522 if (error != 0) 2523 goto sagetparamsexit; 2524 } 2525 2526 if (params_to_get & SA_PARAM_BLOCKSIZE) 2527 *blocksize = scsi_3btoul(mode_blk->blklen); 2528 2529 if (params_to_get & SA_PARAM_NUMBLOCKS) 2530 *numblocks = scsi_3btoul(mode_blk->nblocks); 2531 2532 if (params_to_get & SA_PARAM_BUFF_MODE) 2533 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2534 2535 if (params_to_get & SA_PARAM_DENSITY) 2536 *density = mode_blk->density; 2537 2538 if (params_to_get & SA_PARAM_WP) 2539 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2540 2541 if (params_to_get & SA_PARAM_SPEED) 2542 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2543 2544 if (params_to_get & SA_PARAM_COMPRESSION) { 2545 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2546 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2547 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2548 *comp_supported = 2549 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2550 *comp_enabled = 2551 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2552 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2553 } else { 2554 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2555 /* 2556 * We don't really know whether this device supports 2557 * Data Compression if the the algorithm field is 2558 * zero. Just say we do. 2559 */ 2560 *comp_supported = TRUE; 2561 *comp_enabled = 2562 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2563 *comp_algorithm = cp->sel_comp_alg; 2564 } 2565 if (tcs != NULL) 2566 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2567 } 2568 2569 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2570 int idx; 2571 char *xyz = mode_buffer; 2572 xpt_print_path(periph->path); 2573 printf("Mode Sense Data="); 2574 for (idx = 0; idx < mode_buffer_len; idx++) 2575 printf(" 0x%02x", xyz[idx] & 0xff); 2576 printf("\n"); 2577 } 2578 2579sagetparamsexit: 2580 2581 xpt_release_ccb(ccb); 2582 free(mode_buffer, M_TEMP); 2583 return (error); 2584} 2585 2586/* 2587 * The purpose of this function is to set one of four different parameters 2588 * for a tape drive: 2589 * - blocksize 2590 * - density 2591 * - compression / compression algorithm 2592 * - buffering mode 2593 * 2594 * The assumption is that this will be called from saioctl(), and therefore 2595 * from a process context. Thus the waiting malloc calls below. If that 2596 * assumption ever changes, the malloc calls should be changed to be 2597 * NOWAIT mallocs. 2598 * 2599 * Any or all of the four parameters may be set when this function is 2600 * called. It should handle setting more than one parameter at once. 2601 */ 2602static int 2603sasetparams(struct cam_periph *periph, sa_params params_to_set, 2604 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2605 u_int32_t sense_flags) 2606{ 2607 struct sa_softc *softc; 2608 u_int32_t current_blocksize; 2609 u_int32_t current_calg; 2610 u_int8_t current_density; 2611 u_int8_t current_speed; 2612 int comp_enabled, comp_supported; 2613 void *mode_buffer; 2614 int mode_buffer_len; 2615 struct scsi_mode_header_6 *mode_hdr; 2616 struct scsi_mode_blk_desc *mode_blk; 2617 sa_comp_t *ccomp, *cpage; 2618 int buff_mode; 2619 union ccb *ccb = NULL; 2620 int error; 2621 2622 softc = (struct sa_softc *)periph->softc; 2623 2624 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2625 2626 /* 2627 * Since it doesn't make sense to set the number of blocks, or 2628 * write protection, we won't try to get the current value. We 2629 * always want to get the blocksize, so we can set it back to the 2630 * proper value. 2631 */ 2632 error = sagetparams(periph, 2633 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2634 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2635 ¤t_speed, &comp_supported, &comp_enabled, 2636 ¤t_calg, ccomp); 2637 2638 if (error != 0) { 2639 free(ccomp, M_TEMP); 2640 return (error); 2641 } 2642 2643 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2644 if (params_to_set & SA_PARAM_COMPRESSION) 2645 mode_buffer_len += sizeof (sa_comp_t); 2646 2647 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2648 2649 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2650 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2651 2652 ccb = cam_periph_getccb(periph, 1); 2653 2654retry: 2655 2656 if (params_to_set & SA_PARAM_COMPRESSION) { 2657 if (mode_blk) { 2658 cpage = (sa_comp_t *)&mode_blk[1]; 2659 } else { 2660 cpage = (sa_comp_t *)&mode_hdr[1]; 2661 } 2662 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2663 cpage->hdr.pagecode &= ~0x80; 2664 } else 2665 cpage = NULL; 2666 2667 /* 2668 * If the caller wants us to set the blocksize, use the one they 2669 * pass in. Otherwise, use the blocksize we got back from the 2670 * mode select above. 2671 */ 2672 if (mode_blk) { 2673 if (params_to_set & SA_PARAM_BLOCKSIZE) 2674 scsi_ulto3b(blocksize, mode_blk->blklen); 2675 else 2676 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2677 2678 /* 2679 * Set density if requested, else preserve old density. 2680 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2681 * devices, else density we've latched up in our softc. 2682 */ 2683 if (params_to_set & SA_PARAM_DENSITY) { 2684 mode_blk->density = density; 2685 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2686 mode_blk->density = SCSI_SAME_DENSITY; 2687 } else { 2688 mode_blk->density = softc->media_density; 2689 } 2690 } 2691 2692 /* 2693 * For mode selects, these two fields must be zero. 2694 */ 2695 mode_hdr->data_length = 0; 2696 mode_hdr->medium_type = 0; 2697 2698 /* set the speed to the current value */ 2699 mode_hdr->dev_spec = current_speed; 2700 2701 /* set single-initiator buffering mode */ 2702 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2703 2704 if (mode_blk) 2705 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2706 else 2707 mode_hdr->blk_desc_len = 0; 2708 2709 /* 2710 * First, if the user wants us to set the compression algorithm or 2711 * just turn compression on, check to make sure that this drive 2712 * supports compression. 2713 */ 2714 if (params_to_set & SA_PARAM_COMPRESSION) { 2715 /* 2716 * If the compression algorithm is 0, disable compression. 2717 * If the compression algorithm is non-zero, enable 2718 * compression and set the compression type to the 2719 * specified compression algorithm, unless the algorithm is 2720 * MT_COMP_ENABLE. In that case, we look at the 2721 * compression algorithm that is currently set and if it is 2722 * non-zero, we leave it as-is. If it is zero, and we have 2723 * saved a compression algorithm from a time when 2724 * compression was enabled before, set the compression to 2725 * the saved value. 2726 */ 2727 switch (ccomp->hdr.pagecode & ~0x80) { 2728 case SA_DATA_COMPRESSION_PAGE: 2729 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2730 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2731 if (calg == 0) { 2732 /* 2733 * Disable compression, but leave the 2734 * decompression and the capability bit 2735 * alone. 2736 */ 2737 dcp->dce_and_dcc = SA_DCP_DCC; 2738 dcp->dde_and_red |= SA_DCP_DDE; 2739 break; 2740 } 2741 /* enable compression && decompression */ 2742 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2743 dcp->dde_and_red |= SA_DCP_DDE; 2744 /* 2745 * If there, use compression algorithm from caller. 2746 * Otherwise, if there's a saved compression algorithm 2747 * and there is no current algorithm, use the saved 2748 * algorithm. Else parrot back what we got and hope 2749 * for the best. 2750 */ 2751 if (calg != MT_COMP_ENABLE) { 2752 scsi_ulto4b(calg, dcp->comp_algorithm); 2753 scsi_ulto4b(calg, dcp->decomp_algorithm); 2754 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2755 softc->saved_comp_algorithm != 0) { 2756 scsi_ulto4b(softc->saved_comp_algorithm, 2757 dcp->comp_algorithm); 2758 scsi_ulto4b(softc->saved_comp_algorithm, 2759 dcp->decomp_algorithm); 2760 } 2761 break; 2762 } 2763 case SA_DEVICE_CONFIGURATION_PAGE: 2764 { 2765 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2766 if (calg == 0) { 2767 dcp->sel_comp_alg = SA_COMP_NONE; 2768 break; 2769 } 2770 if (calg != MT_COMP_ENABLE) { 2771 dcp->sel_comp_alg = calg; 2772 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2773 softc->saved_comp_algorithm != 0) { 2774 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2775 } 2776 break; 2777 } 2778 default: 2779 /* 2780 * The drive doesn't seem to support compression, 2781 * so turn off the set compression bit. 2782 */ 2783 params_to_set &= ~SA_PARAM_COMPRESSION; 2784 xpt_print_path(periph->path); 2785 printf("device does not seem to support compression\n"); 2786 2787 /* 2788 * If that was the only thing the user wanted us to set, 2789 * clean up allocated resources and return with 2790 * 'operation not supported'. 2791 */ 2792 if (params_to_set == SA_PARAM_NONE) { 2793 free(mode_buffer, M_TEMP); 2794 xpt_release_ccb(ccb); 2795 return (ENODEV); 2796 } 2797 2798 /* 2799 * That wasn't the only thing the user wanted us to set. 2800 * So, decrease the stated mode buffer length by the 2801 * size of the compression mode page. 2802 */ 2803 mode_buffer_len -= sizeof(sa_comp_t); 2804 } 2805 } 2806 2807 /* It is safe to retry this operation */ 2808 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2809 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2810 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2811 2812 error = cam_periph_runccb(ccb, saerror, 0, 2813 sense_flags, &softc->device_stats); 2814 QFRLS(ccb); 2815 2816 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2817 int idx; 2818 char *xyz = mode_buffer; 2819 xpt_print_path(periph->path); 2820 printf("Err%d, Mode Select Data=", error); 2821 for (idx = 0; idx < mode_buffer_len; idx++) 2822 printf(" 0x%02x", xyz[idx] & 0xff); 2823 printf("\n"); 2824 } 2825 2826 2827 if (error) { 2828 /* 2829 * If we can, try without setting density/blocksize. 2830 */ 2831 if (mode_blk) { 2832 if ((params_to_set & 2833 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2834 mode_blk = NULL; 2835 goto retry; 2836 } 2837 } else { 2838 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2839 cpage = (sa_comp_t *)&mode_blk[1]; 2840 } 2841 2842 /* 2843 * If we were setting the blocksize, and that failed, we 2844 * want to set it to its original value. If we weren't 2845 * setting the blocksize, we don't want to change it. 2846 */ 2847 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2848 2849 /* 2850 * Set density if requested, else preserve old density. 2851 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2852 * devices, else density we've latched up in our softc. 2853 */ 2854 if (params_to_set & SA_PARAM_DENSITY) { 2855 mode_blk->density = current_density; 2856 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2857 mode_blk->density = SCSI_SAME_DENSITY; 2858 } else { 2859 mode_blk->density = softc->media_density; 2860 } 2861 2862 if (params_to_set & SA_PARAM_COMPRESSION) 2863 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2864 2865 /* 2866 * The retry count is the only CCB field that might have been 2867 * changed that we care about, so reset it back to 1. 2868 */ 2869 ccb->ccb_h.retry_count = 1; 2870 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2871 &softc->device_stats); 2872 QFRLS(ccb); 2873 } 2874 2875 xpt_release_ccb(ccb); 2876 2877 if (ccomp != NULL) 2878 free(ccomp, M_TEMP); 2879 2880 if (params_to_set & SA_PARAM_COMPRESSION) { 2881 if (error) { 2882 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2883 /* 2884 * Even if we get an error setting compression, 2885 * do not say that we don't support it. We could 2886 * have been wrong, or it may be media specific. 2887 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2888 */ 2889 softc->saved_comp_algorithm = softc->comp_algorithm; 2890 softc->comp_algorithm = 0; 2891 } else { 2892 softc->flags |= SA_FLAG_COMP_ENABLED; 2893 softc->comp_algorithm = calg; 2894 } 2895 } 2896 2897 free(mode_buffer, M_TEMP); 2898 return (error); 2899} 2900 2901static void 2902saprevent(struct cam_periph *periph, int action) 2903{ 2904 struct sa_softc *softc; 2905 union ccb *ccb; 2906 int error, sf; 2907 2908 softc = (struct sa_softc *)periph->softc; 2909 2910 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2911 return; 2912 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2913 return; 2914 2915 /* 2916 * We can be quiet about illegal requests. 2917 */ 2918 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2919 sf = 0; 2920 } else 2921 sf = SF_QUIET_IR; 2922 2923 ccb = cam_periph_getccb(periph, 1); 2924 2925 /* It is safe to retry this operation */ 2926 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2927 SSD_FULL_SIZE, 100000); 2928 2929 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2930 QFRLS(ccb); 2931 if (error == 0) { 2932 if (action == PR_ALLOW) 2933 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2934 else 2935 softc->flags |= SA_FLAG_TAPE_LOCKED; 2936 } 2937 2938 xpt_release_ccb(ccb); 2939} 2940 2941static int 2942sarewind(struct cam_periph *periph) 2943{ 2944 union ccb *ccb; 2945 struct sa_softc *softc; 2946 int error; 2947 2948 softc = (struct sa_softc *)periph->softc; 2949 2950 ccb = cam_periph_getccb(periph, 1); 2951 2952 /* It is safe to retry this operation */ 2953 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2954 SSD_FULL_SIZE, REWIND_TIMEOUT); 2955 2956 softc->dsreg = MTIO_DSREG_REW; 2957 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2958 softc->dsreg = MTIO_DSREG_REST; 2959 2960 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2961 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2962 2963 xpt_release_ccb(ccb); 2964 if (error == 0) 2965 softc->fileno = softc->blkno = (daddr_t) 0; 2966 else 2967 softc->fileno = softc->blkno = (daddr_t) -1; 2968 return (error); 2969} 2970 2971static int 2972saspace(struct cam_periph *periph, int count, scsi_space_code code) 2973{ 2974 union ccb *ccb; 2975 struct sa_softc *softc; 2976 int error; 2977 2978 softc = (struct sa_softc *)periph->softc; 2979 2980 ccb = cam_periph_getccb(periph, 1); 2981 2982 /* This cannot be retried */ 2983 2984 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2985 SSD_FULL_SIZE, SPACE_TIMEOUT); 2986 2987 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2988 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2989 softc->dsreg = MTIO_DSREG_REST; 2990 2991 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2992 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2993 2994 xpt_release_ccb(ccb); 2995 2996 /* 2997 * If a spacing operation has failed, we need to invalidate 2998 * this mount. 2999 * 3000 * If the spacing operation was setmarks or to end of recorded data, 3001 * we no longer know our relative position. 3002 * 3003 * We are not managing residuals here (really). 3004 */ 3005 if (error) { 3006 softc->fileno = softc->blkno = (daddr_t) -1; 3007 } else if (code == SS_SETMARKS || code == SS_EOD) { 3008 softc->fileno = softc->blkno = (daddr_t) -1; 3009 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3010 softc->fileno += count; 3011 softc->blkno = 0; 3012 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3013 softc->blkno += count; 3014 } 3015 return (error); 3016} 3017 3018static int 3019sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3020{ 3021 union ccb *ccb; 3022 struct sa_softc *softc; 3023 int error; 3024 3025 softc = (struct sa_softc *)periph->softc; 3026 3027 ccb = cam_periph_getccb(periph, 1); 3028 3029 softc->dsreg = MTIO_DSREG_FMK; 3030 /* this *must* not be retried */ 3031 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3032 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 3033 softc->dsreg = MTIO_DSREG_REST; 3034 3035 3036 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3037 3038 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3039 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3040 3041 /* 3042 * XXXX: Get back the actual number of filemarks written 3043 * XXXX: (there can be a residual). 3044 */ 3045 if (error == 0 && nmarks) { 3046 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3047 softc->filemarks += nmarks; 3048 } 3049 xpt_release_ccb(ccb); 3050 3051 /* 3052 * Update relative positions (if we're doing that). 3053 */ 3054 if (error) { 3055 softc->fileno = softc->blkno = (daddr_t) -1; 3056 } else if (softc->fileno != (daddr_t) -1) { 3057 softc->fileno += nmarks; 3058 softc->blkno = 0; 3059 } 3060 return (error); 3061} 3062 3063static int 3064sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3065{ 3066 struct scsi_tape_position_data loc; 3067 union ccb *ccb; 3068 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3069 int error; 3070 3071 /* 3072 * We try and flush any buffered writes here if we were writing 3073 * and we're trying to get hardware block position. It eats 3074 * up performance substantially, but I'm wary of drive firmware. 3075 * 3076 * I think that *logical* block position is probably okay- 3077 * but hardware block position might have to wait for data 3078 * to hit media to be valid. Caveat Emptor. 3079 */ 3080 3081 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3082 error = sawritefilemarks(periph, 0, 0); 3083 if (error && error != EACCES) 3084 return (error); 3085 } 3086 3087 ccb = cam_periph_getccb(periph, 1); 3088 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3089 hard, &loc, SSD_FULL_SIZE, 5000); 3090 softc->dsreg = MTIO_DSREG_RBSY; 3091 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3092 softc->dsreg = MTIO_DSREG_REST; 3093 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3094 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3095 3096 if (error == 0) { 3097 if (loc.flags & SA_RPOS_UNCERTAIN) { 3098 error = EINVAL; /* nothing is certain */ 3099 } else { 3100 *blkptr = scsi_4btoul(loc.firstblk); 3101 } 3102 } 3103 3104 xpt_release_ccb(ccb); 3105 return (error); 3106} 3107 3108static int 3109sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3110{ 3111 union ccb *ccb; 3112 struct sa_softc *softc; 3113 int error; 3114 3115 /* 3116 * We used to try and flush any buffered writes here. 3117 * Now we push this onto user applications to either 3118 * flush the pending writes themselves (via a zero count 3119 * WRITE FILEMARKS command) or they can trust their tape 3120 * drive to do this correctly for them. 3121 */ 3122 3123 softc = (struct sa_softc *)periph->softc; 3124 ccb = cam_periph_getccb(periph, 1); 3125 3126 3127 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3128 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 3129 3130 softc->dsreg = MTIO_DSREG_POS; 3131 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3132 softc->dsreg = MTIO_DSREG_REST; 3133 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3134 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3135 xpt_release_ccb(ccb); 3136 /* 3137 * Note relative file && block number position as now unknown. 3138 */ 3139 softc->fileno = softc->blkno = (daddr_t) -1; 3140 return (error); 3141} 3142 3143static int 3144saretension(struct cam_periph *periph) 3145{ 3146 union ccb *ccb; 3147 struct sa_softc *softc; 3148 int error; 3149 3150 softc = (struct sa_softc *)periph->softc; 3151 3152 ccb = cam_periph_getccb(periph, 1); 3153 3154 /* It is safe to retry this operation */ 3155 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3156 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3157 3158 softc->dsreg = MTIO_DSREG_TEN; 3159 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3160 softc->dsreg = MTIO_DSREG_REST; 3161 3162 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3163 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3164 xpt_release_ccb(ccb); 3165 if (error == 0) 3166 softc->fileno = softc->blkno = (daddr_t) 0; 3167 else 3168 softc->fileno = softc->blkno = (daddr_t) -1; 3169 return (error); 3170} 3171 3172static int 3173sareservereleaseunit(struct cam_periph *periph, int reserve) 3174{ 3175 union ccb *ccb; 3176 struct sa_softc *softc; 3177 int error; 3178 3179 softc = (struct sa_softc *)periph->softc; 3180 ccb = cam_periph_getccb(periph, 1); 3181 3182 /* It is safe to retry this operation */ 3183 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3184 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 3185 softc->dsreg = MTIO_DSREG_RBSY; 3186 error = cam_periph_runccb(ccb, saerror, 0, 3187 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3188 softc->dsreg = MTIO_DSREG_REST; 3189 QFRLS(ccb); 3190 xpt_release_ccb(ccb); 3191 3192 /* 3193 * If the error was Illegal Request, then the device doesn't support 3194 * RESERVE/RELEASE. This is not an error. 3195 */ 3196 if (error == EINVAL) { 3197 error = 0; 3198 } 3199 3200 return (error); 3201} 3202 3203static int 3204saloadunload(struct cam_periph *periph, int load) 3205{ 3206 union ccb *ccb; 3207 struct sa_softc *softc; 3208 int error; 3209 3210 softc = (struct sa_softc *)periph->softc; 3211 3212 ccb = cam_periph_getccb(periph, 1); 3213 3214 /* It is safe to retry this operation */ 3215 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3216 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3217 3218 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3219 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3220 softc->dsreg = MTIO_DSREG_REST; 3221 QFRLS(ccb); 3222 xpt_release_ccb(ccb); 3223 3224 if (error || load == 0) 3225 softc->fileno = softc->blkno = (daddr_t) -1; 3226 else if (error == 0) 3227 softc->fileno = softc->blkno = (daddr_t) 0; 3228 return (error); 3229} 3230 3231static int 3232saerase(struct cam_periph *periph, int longerase) 3233{ 3234 3235 union ccb *ccb; 3236 struct sa_softc *softc; 3237 int error; 3238 3239 softc = (struct sa_softc *)periph->softc; 3240 3241 ccb = cam_periph_getccb(periph, 1); 3242 3243 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3244 SSD_FULL_SIZE, ERASE_TIMEOUT); 3245 3246 softc->dsreg = MTIO_DSREG_ZER; 3247 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3248 softc->dsreg = MTIO_DSREG_REST; 3249 3250 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3251 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3252 xpt_release_ccb(ccb); 3253 return (error); 3254} 3255 3256#endif /* _KERNEL */ 3257 3258/* 3259 * Read tape block limits command. 3260 */ 3261void 3262scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3263 void (*cbfcnp)(struct cam_periph *, union ccb *), 3264 u_int8_t tag_action, 3265 struct scsi_read_block_limits_data *rlimit_buf, 3266 u_int8_t sense_len, u_int32_t timeout) 3267{ 3268 struct scsi_read_block_limits *scsi_cmd; 3269 3270 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3271 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3272 sizeof(*scsi_cmd), timeout); 3273 3274 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3275 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3276 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3277} 3278 3279void 3280scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3281 void (*cbfcnp)(struct cam_periph *, union ccb *), 3282 u_int8_t tag_action, int readop, int sli, 3283 int fixed, u_int32_t length, u_int8_t *data_ptr, 3284 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3285{ 3286 struct scsi_sa_rw *scsi_cmd; 3287 3288 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3289 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3290 scsi_cmd->sli_fixed = 0; 3291 if (sli && readop) 3292 scsi_cmd->sli_fixed |= SAR_SLI; 3293 if (fixed) 3294 scsi_cmd->sli_fixed |= SARW_FIXED; 3295 scsi_ulto3b(length, scsi_cmd->length); 3296 scsi_cmd->control = 0; 3297 3298 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3299 tag_action, data_ptr, dxfer_len, sense_len, 3300 sizeof(*scsi_cmd), timeout); 3301} 3302 3303void 3304scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3305 void (*cbfcnp)(struct cam_periph *, union ccb *), 3306 u_int8_t tag_action, int immediate, int eot, 3307 int reten, int load, u_int8_t sense_len, 3308 u_int32_t timeout) 3309{ 3310 struct scsi_load_unload *scsi_cmd; 3311 3312 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3313 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3314 scsi_cmd->opcode = LOAD_UNLOAD; 3315 if (immediate) 3316 scsi_cmd->immediate = SLU_IMMED; 3317 if (eot) 3318 scsi_cmd->eot_reten_load |= SLU_EOT; 3319 if (reten) 3320 scsi_cmd->eot_reten_load |= SLU_RETEN; 3321 if (load) 3322 scsi_cmd->eot_reten_load |= SLU_LOAD; 3323 3324 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3325 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3326} 3327 3328void 3329scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3330 void (*cbfcnp)(struct cam_periph *, union ccb *), 3331 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3332 u_int32_t timeout) 3333{ 3334 struct scsi_rewind *scsi_cmd; 3335 3336 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3337 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3338 scsi_cmd->opcode = REWIND; 3339 if (immediate) 3340 scsi_cmd->immediate = SREW_IMMED; 3341 3342 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3343 0, sense_len, sizeof(*scsi_cmd), timeout); 3344} 3345 3346void 3347scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3348 void (*cbfcnp)(struct cam_periph *, union ccb *), 3349 u_int8_t tag_action, scsi_space_code code, 3350 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3351{ 3352 struct scsi_space *scsi_cmd; 3353 3354 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3355 scsi_cmd->opcode = SPACE; 3356 scsi_cmd->code = code; 3357 scsi_ulto3b(count, scsi_cmd->count); 3358 scsi_cmd->control = 0; 3359 3360 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3361 0, sense_len, sizeof(*scsi_cmd), timeout); 3362} 3363 3364void 3365scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3366 void (*cbfcnp)(struct cam_periph *, union ccb *), 3367 u_int8_t tag_action, int immediate, int setmark, 3368 u_int32_t num_marks, u_int8_t sense_len, 3369 u_int32_t timeout) 3370{ 3371 struct scsi_write_filemarks *scsi_cmd; 3372 3373 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3374 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3375 scsi_cmd->opcode = WRITE_FILEMARKS; 3376 if (immediate) 3377 scsi_cmd->byte2 |= SWFMRK_IMMED; 3378 if (setmark) 3379 scsi_cmd->byte2 |= SWFMRK_WSMK; 3380 3381 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3382 3383 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3384 0, sense_len, sizeof(*scsi_cmd), timeout); 3385} 3386 3387/* 3388 * The reserve and release unit commands differ only by their opcodes. 3389 */ 3390void 3391scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3392 void (*cbfcnp)(struct cam_periph *, union ccb *), 3393 u_int8_t tag_action, int third_party, 3394 int third_party_id, u_int8_t sense_len, 3395 u_int32_t timeout, int reserve) 3396{ 3397 struct scsi_reserve_release_unit *scsi_cmd; 3398 3399 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3400 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3401 3402 if (reserve) 3403 scsi_cmd->opcode = RESERVE_UNIT; 3404 else 3405 scsi_cmd->opcode = RELEASE_UNIT; 3406 3407 if (third_party) { 3408 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3409 scsi_cmd->lun_thirdparty |= 3410 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3411 } 3412 3413 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3414 0, sense_len, sizeof(*scsi_cmd), timeout); 3415} 3416 3417void 3418scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3419 void (*cbfcnp)(struct cam_periph *, union ccb *), 3420 u_int8_t tag_action, int immediate, int long_erase, 3421 u_int8_t sense_len, u_int32_t timeout) 3422{ 3423 struct scsi_erase *scsi_cmd; 3424 3425 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3426 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3427 3428 scsi_cmd->opcode = ERASE; 3429 3430 if (immediate) 3431 scsi_cmd->lun_imm_long |= SE_IMMED; 3432 3433 if (long_erase) 3434 scsi_cmd->lun_imm_long |= SE_LONG; 3435 3436 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3437 0, sense_len, sizeof(*scsi_cmd), timeout); 3438} 3439 3440/* 3441 * Read Tape Position command. 3442 */ 3443void 3444scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3445 void (*cbfcnp)(struct cam_periph *, union ccb *), 3446 u_int8_t tag_action, int hardsoft, 3447 struct scsi_tape_position_data *sbp, 3448 u_int8_t sense_len, u_int32_t timeout) 3449{ 3450 struct scsi_tape_read_position *scmd; 3451 3452 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3453 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3454 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3455 bzero(scmd, sizeof(*scmd)); 3456 scmd->opcode = READ_POSITION; 3457 scmd->byte1 = hardsoft; 3458} 3459 3460/* 3461 * Set Tape Position command. 3462 */ 3463void 3464scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3465 void (*cbfcnp)(struct cam_periph *, union ccb *), 3466 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3467 u_int8_t sense_len, u_int32_t timeout) 3468{ 3469 struct scsi_tape_locate *scmd; 3470 3471 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3472 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3473 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3474 bzero(scmd, sizeof(*scmd)); 3475 scmd->opcode = LOCATE; 3476 if (hardsoft) 3477 scmd->byte1 |= SA_SPOS_BT; 3478 scsi_ulto4b(blkno, scmd->blkaddr); 3479} 3480